High-energy spin and charge excitations in electron-doped copper oxide superconductors

@article{ ISI:000335223200001,
Author = {Ishii, K. and Fujita, M. and Sasaki, T. and Minola, M. and Dellea, G.
   and Mazzoli, C. and Kummer, K. and Ghiringhelli, G. and Braicovich, L.
   and Tohyama, T. and Tsutsumi, K. and Sato, K. and Kajimoto, R. and
   Ikeuchi, K. and Yamada, K. and Yoshida, M. and Kurooka, M. and Mizuki,
   J.},
Title = {{High-energy spin and charge excitations in electron-doped copper oxide
   superconductors}},
Journal = {{NATURE COMMUNICATIONS}},
Year = {{2014}},
Volume = {{5}},
Month = {{APR}},
Abstract = {{The evolution of electronic (spin and charge) excitations upon carrier
   doping is an extremely important issue in superconducting layered
   cuprates and the knowledge of its asymmetry between electron- and
   hole-dopings is still fragmentary. Here we combine X-ray and neutron
   inelastic scattering measurements to track the doping dependence of both
   spin and charge excitations in electron-doped materials. Copper L-3
   resonant inelastic X-ray scattering spectra show that magnetic
   excitations shift to higher energy upon doping. Their dispersion becomes
   steeper near the magnetic zone centre and they deeply mix with charge
   excitations, indicating that electrons acquire a highly itinerant
   character in the doped metallic state. Moreover, above the magnetic
   excitations, an additional dispersing feature is observed near the
   G-point, and we ascribe it to particle-hole charge excitations. These
   properties are in stark contrast with the more localized spin
   excitations (paramagnons) recently observed in hole-doped compounds even
   at high doping levels.}},
Publisher = {{NATURE PUBLISHING GROUP}},
Address = {{MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND}},
Type = {{Article}},
Language = {{English}},
Affiliation = {{Ishii, K (Corresponding Author), Japan Atom Energy Agcy, SPring 8, Sayo, Hyogo 6795148, Japan.
   Ishii, K.; Yoshida, M.; Mizuki, J., Japan Atom Energy Agcy, SPring 8, Sayo, Hyogo 6795148, Japan.
   Fujita, M.; Sasaki, T.; Tsutsumi, K.; Sato, K., Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan.
   Minola, M.; Dellea, G.; Mazzoli, C.; Ghiringhelli, G.; Braicovich, L., Politecn Milan, CNR SPIN, I-20133 Milan, Italy.
   Minola, M.; Dellea, G.; Mazzoli, C.; Ghiringhelli, G.; Braicovich, L., Politecn Milan, Dipartimento Fis, I-20133 Milan, Italy.
   Kummer, K., European Synchrotron Radiat Facil, F-38043 Grenoble, France.
   Tohyama, T., Kyoto Univ, Yukawa Inst Theoret Phys, Kyoto 6068502, Japan.
   Kajimoto, R., Japan Atom Energy Agcy, J PARC Ctr, Mat & Life Sci Div, Tokai, Ibaraki 3191195, Japan.
   Ikeuchi, K., Comprehens Res Org Sci & Soc, Res Ctr Neutron Sci & Technol, Tokai, Ibaraki 3191106, Japan.
   Yamada, K., High Energy Accelerator Res Org, Inst Mat Struct Sci, Tsukuba, Ibaraki 3050801, Japan.
   Yoshida, M.; Kurooka, M.; Mizuki, J., Kwansei Gakuin Univ, Sch Sci & Technol, Sanda, Hyogo 6691337, Japan.}},
DOI = {{10.1038/ncomms4714}},
Article-Number = {{3714}},
ISSN = {{2041-1723}},
Keywords-Plus = {{MAGNETIC EXCITATIONS; WAVES}},
Research-Areas = {{Science & Technology - Other Topics}},
Web-of-Science-Categories  = {{Multidisciplinary Sciences}},
Author-Email = {{kenji@spring8.or.jp
   fujita@imr.tohoku.ac.jp}},
ResearcherID-Numbers = {{Tohyma, Takami/F-8212-2018
   Ishii, Kenji/G-3453-2017
   Fujita, Masaki/D-8430-2013
   Ghiringhelli, Giacomo/D-1159-2014
   }},
ORCID-Numbers = {{Tohyma, Takami/0000-0002-4679-7719
   Ishii, Kenji/0000-0002-6465-8202
   Ghiringhelli, Giacomo/0000-0003-0867-7748
   Mazzoli, Claudio/0000-0001-9774-1507
   Kajimoto, Ryoichi/0000-0003-4845-5947
   Minola, Matteo/0000-0003-4084-0664
   Braicovich, Lucio/0000-0001-6548-9140}},
Funding-Acknowledgement = {{INS experiments at J-PARC {[}2012P0201]; JSPS KAKENHIMinistry of
   Education, Culture, Sports, Science and Technology, Japan (MEXT)Japan
   Society for the Promotion of ScienceGrants-in-Aid for Scientific
   Research (KAKENHI) {[}25400333, 23340093, 22340097]; Italian Ministry of
   Research (MIUR)Ministry of Education, Universities and Research (MIUR);
   Strategic Programs for Innovative Research (SPIRE)Ministry of Education,
   Culture, Sports, Science and Technology, Japan (MEXT); Computational
   Materials Science Initiative (CMSI) from MEXT; Grants-in-Aid for
   Scientific ResearchMinistry of Education, Culture, Sports, Science and
   Technology, Japan (MEXT)Japan Society for the Promotion of
   ScienceGrants-in-Aid for Scientific Research (KAKENHI) {[}22244039,
   23340093, 22340097] Funding Source: KAKEN}},
Funding-Text = {{We acknowledge K. Tsutsui, E. Kaneshita, S. Wakimoto, and H. Kimura for
   invaluable discussion. We also thank H. Kimura for sample preparation
   and N.B. Brookes for the support at the beam line ID08 of the European
   Synchrotron Radiation Facility (ESRF). The Cu L<INF>3</INF> RIXS
   experiments were performed at the beam line ID08 of the ESRF using the
   AXES spectrometer and we acknowledge the ESRF for provision of
   synchrotron radiation facilities. The INS experiments at J-PARC were
   carried out under Project No. 2012P0201. The Cu K-edge RIXS experiments
   at SPring-8 were performed with the approval of the Japan Synchrotron
   Radiation Research Institute (JASRI) (Proposals No. 2012B3502). This
   work is financially supported by JSPS KAKENHI Grant Number 25400333,
   23340093 and 22340097. G.D., G.G. and L.B. are supported by the Italian
   Ministry of Research (MIUR) through the PIK-POLARIX project. T.T. is
   supported by Strategic Programs for Innovative Research (SPIRE), the
   Computational Materials Science Initiative (CMSI) from MEXT, and K. Is.,
   M.F. and T.T. acknowledge YIPQS Molecule-type workshop at YITP. This
   work was partly performed under the Inter-University Cooperative
   Research Program of the Institute for Materials Research, Tohoku
   University (Proposal No. 12K0092).}},
Number-of-Cited-References = {{31}},
Times-Cited = {{65}},
Usage-Count-Last-180-days = {{0}},
Usage-Count-Since-2013 = {{53}},
Journal-ISO = {{Nat. Commun.}},
Doc-Delivery-Number = {{AG2CM}},
Unique-ID = {{ISI:000335223200001}},
OA = {{DOAJ Gold, Green Published}},
DA = {{2020-12-22}},
}